What are some examples of cache coherence in computer systems?
Cache coherence refers to the consistency of data stored in local caches of a shared resource. Examples include MESI protocol, MOESI protocol, and directory-based coherence.
Can you explain the MESI protocol?
Sure! The MESI protocol stands for Modified, Exclusive, Shared, and Invalid. It helps maintain cache coherence by defining states for cache lines.
What are the advantages of using cache coherence protocols?
The advantages include improved performance, reduced latency, and efficient data sharing among multiple processors.
Are there any challenges with cache coherence?
Yes, challenges include increased complexity, potential bottlenecks, and overhead in maintaining coherence across caches.
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